| 改善电感测微仪二次测量电路精度的措施 |
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| 引用本文： | 洪小丽,戴一帆.改善电感测微仪二次测量电路精度的措施[J].国防科技大学学报,2003,25(3):100-103. |
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| 作者姓名： | 洪小丽 戴一帆 |
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| 作者单位： | 国防科学技术大学机电工程与自动化学院,湖南,长沙,410073 |
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| 摘 要： | 介绍了差动调幅式电感测微仪的工作原理,分析了影响二次测量电路精度的因素,在此基础上提出了利用自稳幅技术以及波形改善技术、全波数字相敏检波技术以及软件部分的数字滤波、线性补偿技术来改善测量精度的措施。实验结果表明,采用上述改进措施,测量精度有了显著的提高。
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| 关 键 词： | 电感测微仪 数字相敏检波 自稳幅技术 |
| 文章编号： | 1001-2486(2003)03-0100-04 |
| 收稿时间： | 2003/1/10 0:00:00 |
| 修稿时间： | 2003年1月10日 |
Means of Improving the Precision of Measuring the Circuit of the Inductance Sensor |
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| HONG Xiaoli and DAI Yifan.Means of Improving the Precision of Measuring the Circuit of the Inductance Sensor[J].Journal of National University of Defense Technology,2003,25(3):100-103. |
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| Authors: | HONG Xiaoli and DAI Yifan |
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| Institution: | College of Mechatronics Engineering and Automation, National Univ. of Defense Technology,Changsha 410073,China;College of Mechatronics Engineering and Automation, National Univ. of Defense Technology,Changsha 410073,China |
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| Abstract: | The principle of the differential amplitude-modulated inductance sensor is introduced and the factors affecting the precision of the secondary measuring circuit is analyzed. Then some techniques are combined to improve the measuring precision, such as the self-fixed amplitude technique, waveform-mending technique, full digital phase sensitivity detection technique, as well as digital filter and linearity compensation technique in the software. The experiments show that the measuring precision has been greatly enhanced using these techniques. |
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| Keywords: | inductance sensor digital phase sensitivity detection self-fixed amplitude technique |
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